Bah! My H10 seems to be on it's last few lives (H10's have 9 lives, like cats you know). I'm pretty sure the battery connection has gone to sh_t as it will hold a charge for around... 4 whole minutes then just power off. I have no money, but am willing to give you 50 brownie points (wow!) if you send off your spare battery (or H10), I will be VERY appreciative
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-Adam